refactor(networking): remove discv5 package and test surface#734
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tcoratger merged 1 commit intoMay 20, 2026
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No lean Ethereum client (Ream, ethlambda, zeam) implements discv5; all converge on libp2p + QUIC with ENR records loaded from static bootnode configuration. The discv5 wire protocol implementation was carried over from beacon-chain assumptions and has zero production consumers. Removes: - src/lean_spec/subspecs/networking/discovery/ (11 files) - tests/lean_spec/subspecs/networking/discovery/ (15 files) - tests/consensus/lstar/networking/test_discv5_*.py and test_discovery_*.py (5 fillers) - packages/testing/.../test_fixtures/discovery_crypto.py - discv5 sections of test_fixtures/networking_codec.py - make_challenge_data helper in tests/lean_spec/helpers/builders.py Keeps subspecs/networking/enr/ (ENR record format is used by all lean clients as a static address record). Updates peer.py and types.py docstrings to drop stale references to "populated from discovery" / "for Discovery v5". Net change: 14k lines removed. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
subspecs/networking/discovery/package along with its unit tests, consensus spec fillers, and the associated test-fixture infrastructure (~14k lines removed net).subspecs/networking/enr/— the ENR record format is shared by every lean client.peer.py/types.pythat previously referred to data being "populated from discovery".Why
Cross-client survey of production lean Ethereum clients:
parse_enrs()from abootnodes: Vec<Bootnode>config for static dialingNotably, Ream's repo contains a
discv5Rust crate but its leanReamBehaviourcomposes only identify / req_resp / gossipsub / slow_peer_banlist / connection_limits — no discovery behaviour. The discv5 crate is used only by Ream's beacon-chain target.The discv5 wire protocol implementation in leanSpec appears to have been carried over from beacon-chain assumptions and has zero production consumers across the lean ecosystem.
Scope of deletion
src/lean_spec/subspecs/networking/discovery/— 11 production filestests/lean_spec/subspecs/networking/discovery/— 15 unit test filestests/consensus/lstar/networking/test_discv5_*.pyandtest_discovery_*.py— 5 consensus spec fillers (no lean client consumes the JSON vectors they emitted)packages/testing/src/consensus_testing/test_fixtures/discovery_crypto.py(fixture class)packages/testing/src/consensus_testing/test_fixtures/networking_codec.py(dispatch cases, decoder map entries,_make_discv5_message,_make_discv5_packet,_make_xor_distance,_make_log2_distance,_build_discv5_message)make_challenge_datahelper intests/lean_spec/helpers/builders.py(used only by deleted unit tests)DiscoveryCryptoTest/DiscoveryCryptoTestFillerTest plan
ruff check— passesruff format --check— passesty check— passescodespell— passesmdformat --check docs/— passesuv lock --check— passespytestsuite on CI🤖 Generated with Claude Code